Added Samsung Galaxy Tab S2 8.0 2015 (Wi-Fi) Markdown

Change-Id: I7c1549e543d993bb3cc93e6ea7fc9cbd84509728
diff --git a/_samsung/samsunggalaxytabs280wifi2015.markdown b/_samsung/samsunggalaxytabs280wifi2015.markdown
new file mode 100644
index 0000000..e32ad4a
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+++ b/_samsung/samsunggalaxytabs280wifi2015.markdown
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+---
+layout: device
+title: "Samsung Galaxy Tab S2 8.0 2015 (Wi-Fi)"
+codename: gts28wifi
+downloadfolder: gts28wifi
+supportstatus: Current
+maintainer: ripee
+oem: Samsung
+ddof: "/dev/block/bootdevice/by-name/recovery"
+devicetree: "https://github.com/TeamWin/android_device_samsung_gts28wifi"
+xdathread: "https://forum.xda-developers.com/tab-s2/orig-development/recovery-twrp-3-2-1-0-t3719988"
+---
+
+{% include disclaimer.html %}
+
+{% include supportstatus.html %}
+
+{% include appinstall.html %}
+
+{% include download.html %}
+
+{% include twrpinstall.html %}
+
+{% include odininstall.html %}
+
+{% include ddinstall.html %}
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